linux-kernel - Re: [PATCH 03/34] powerpc: Use CONFIG

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Message-ID: <20191016093523.tukmwtouugecbll4@linutronix.de>
Date:   Wed, 16 Oct 2019 11:35:23 +0200
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     Michael Ellerman <mpe@...erman.id.au>
Cc:     Christophe Leroy <christophe.leroy@....fr>,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        tglx@...utronix.de, Paul Mackerras <paulus@...ba.org>
Subject: Re: [PATCH 03/34] powerpc: Use CONFIG_PREEMPTION

On 2019-10-16 20:33:08 [+1100], Michael Ellerman wrote:
> Christophe Leroy <christophe.leroy@....fr> writes:
> > Le 15/10/2019 à 21:17, Sebastian Andrzej Siewior a écrit :
> >> From: Thomas Gleixner <tglx@...utronix.de>
> >> 
> >> CONFIG_PREEMPTION is selected by CONFIG_PREEMPT and by CONFIG_PREEMPT_RT.
> >> Both PREEMPT and PREEMPT_RT require the same functionality which today
> >> depends on CONFIG_PREEMPT.
> >> 
> >> Switch the entry code over to use CONFIG_PREEMPTION. Add PREEMPT_RT
> >> output in __die().
> >
> > powerpc doesn't select ARCH_SUPPORTS_RT, so this change is useless as 
> > CONFIG_PREEMPT_RT cannot be selected.
> 
> Yeah I don't think there's any point adding the "_RT" to the __die()
> output until/if we ever start supporting PREEMPT_RT.

so jut the PREEMPT -> PREEMPTION  bits then?

> cheers

Sebastian